Budget constraints are no problem if you know how to show results and focus on the signal, not on the noise.
Cut all the branding expenses that are not connected to revenue directly!
Cut all the software that you're not using or using up to 30% of its practicality.
Ask your thought leaders to write their own copy and post as often as possible on social media.
Use everyone's LinkedIn profile, even the developers who are not really social. Max it out!
Your thinking should be, "If I do this one thing or invest in this one channel, is it going to bring me a sale tomorrow or the day after tomorrow?" If the answer is yes, leave that and cut everything else.